<!DOCTYPE html>
<html lang="zh_CN">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

</body>
<script type="text/javascript">


    var flag = 3;

    /* switch ('var') {

        case 'value1':
            // 代码
            break;
        case 'value2':
            // 代码
            break;
        ....
        default:
            'express';
    }
*/

</script>

</html>
